At least they let us buy 16 GB for a reasonable upgrade cost. VERY few laptops today will take 32 GB, and those that do are big, heavy desktop replacements (HP EliteBook) or even gaming machines that really aren't any more portable than an iMac (various 14 lb Clevo designs). I can't think of a true laptop (less than 8 lbs)with 4 RAM slots, and no MacBook Pro has ever had 4 slots (the 17 certainly SHOULD have, but never did).
Would I have preferred to see 4 slots in the Retina MBP (even trading off 6 ounces to get them) - yes! Is Apple's design any less functional than the 2 slots we'd probably have had - no, and it may be a little better, both for speed and for reliability. The upgrade is fairly reasonably priced, too. It's a little annoying to have to buy the 16 GB option right off (I would have anyway, but many folks might not), but it's not a big deal compared to a 2 slot design. It's much worse in the Air, where, until this week, you couldn't even get 8 GB. Now, you can get 8 GB in the Air, but not 16. The current Airs and the Retina Pro are not RAM-starved, they both have as much as comparable machines from other makers (a few ultrabooks are dual-slot, and will take 16 GB, but most are either single-slot or soldered).The Pro competes against a group of machines that are not soldered, but mostly reach 16 GB in two slots.
The SSD is a similar situation - there's a better design Apple could have used (blade SSD plus a 2.5" bay, or even dual blade SSDs), but it is no worse than the competition. Like 4 RAM slots, dual drives seem to start showing up around 8 lbs. I'd personally have rather seen a 5.2 lb machine with 4 slots (or 16 GB soldered plus 2 empty slots) and 2 bays, but Apple's solution is as powerful as anything any competitor has, and their extra high-speed i/o makes their compromise better than most. They have used their market power to get fast 512 GB SSDs very cheaply compared to what anyone else is selling them for - dual drive systems tend to have a 128 GB SSD and a spinning drive to make up for it.
Would I have preferred to see 4 slots in the Retina MBP (even trading off 6 ounces to get them) - yes! Is Apple's design any less functional than the 2 slots we'd probably have had - no, and it may be a little better, both for speed and for reliability. The upgrade is fairly reasonably priced, too. It's a little annoying to have to buy the 16 GB option right off (I would have anyway, but many folks might not), but it's not a big deal compared to a 2 slot design. It's much worse in the Air, where, until this week, you couldn't even get 8 GB. Now, you can get 8 GB in the Air, but not 16. The current Airs and the Retina Pro are not RAM-starved, they both have as much as comparable machines from other makers (a few ultrabooks are dual-slot, and will take 16 GB, but most are either single-slot or soldered).The Pro competes against a group of machines that are not soldered, but mostly reach 16 GB in two slots.
The SSD is a similar situation - there's a better design Apple could have used (blade SSD plus a 2.5" bay, or even dual blade SSDs), but it is no worse than the competition. Like 4 RAM slots, dual drives seem to start showing up around 8 lbs. I'd personally have rather seen a 5.2 lb machine with 4 slots (or 16 GB soldered plus 2 empty slots) and 2 bays, but Apple's solution is as powerful as anything any competitor has, and their extra high-speed i/o makes their compromise better than most. They have used their market power to get fast 512 GB SSDs very cheaply compared to what anyone else is selling them for - dual drive systems tend to have a 128 GB SSD and a spinning drive to make up for it.